1 files changed, 54 insertions, 0 deletions
diff --git a/cmake/scripts/common/CMakeHelpers.cmake b/cmake/scripts/common/CMakeHelpers.cmake
new file mode 100644
index 0000000..995c38a
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+++ b/cmake/scripts/common/CMakeHelpers.cmake
@@ -0,0 +1,54 @@
+# This file contains functions that support the debugging of the CMake files.
+
+# This file shouldn't be included per default in any CMake file. It should be
+# included and used only on demand. All functions are prefixed with "debug_".
+#
+# Usage:
+# include(scripts/common/CMakeHelpers.cmake)
+# debug_print_variables()
+
+# Print all CMake variables.
+macro(debug_print_variables)
+  get_cmake_property(_variableNames VARIABLES)
+  foreach(_variableName ${_variableNames})
+    message(STATUS "${_variableName} = ${${_variableName}}")
+  endforeach()
+endmacro()
+
+# Get all properties that CMake supports and convert them to a list.
+function(debug_get_properties VAR)
+  execute_process(COMMAND cmake --help-property-list
+                  OUTPUT_VARIABLE _properties)
+  string(REGEX REPLACE ";" "\\\\;" _properties "${_properties}")
+  string(REGEX REPLACE "\n" ";" _properties "${_properties}")
+  list(REMOVE_DUPLICATES _properties)
+  list(REMOVE_ITEM _properties LOCATION)
+  set(${VAR} ${_properties} PARENT_SCOPE)
+endfunction()
+
+# List all properties.
+function(debug_list_properties)
+  debug_get_properties(_properties)
+  message("CMake properties = ${_properties}")
+endfunction()
+
+# Print all set properties of a specified target.
+function(debug_print_target_properties target)
+  if(NOT TARGET ${target})
+    message(FATAL_ERROR "There is no target named '${target}'")
+  endif()
+
+  debug_get_properties(_properties)
+
+  # Reading LOCATION property is deprecated and triggers a fatal error.
+  string(REGEX REPLACE ";LOCATION;|LOCATION" "" _properties "${_properties}")
+  string(REGEX REPLACE "<CONFIG>" "${CMAKE_BUILD_TYPE}" _properties
+         "${_properties}")
+  foreach(_property ${_properties})
+    get_property(_value TARGET ${target} PROPERTY ${_property} SET)
+    if(_value)
+      get_target_property(_value ${target} ${_property})
+      message("${target} ${_property} = ${_value}")
+    endif()
+  endforeach()
+endfunction()